Remove duplcaited plus-minus symbol on PC Qwerty

Bug: 13537661
Change-Id: I18c5accb6af7faaf81f71f861b924ba87838fdbc
diff --git a/java/res/xml/rowkeys_pcqwerty1_shift.xml b/java/res/xml/rowkeys_pcqwerty1_shift.xml
index b9597c0..6a5f00c 100644
--- a/java/res/xml/rowkeys_pcqwerty1_shift.xml
+++ b/java/res/xml/rowkeys_pcqwerty1_shift.xml
@@ -49,12 +49,11 @@
         latin:keySpec=")" />
     <Key
         latin:keySpec="_" />
-    <!-- U+00B1: "±" PLUS-MINUS SIGN
-         U+00D7: "×" MULTIPLICATION SIGN
+    <!-- U+00D7: "×" MULTIPLICATION SIGN
          U+00F7: "÷" DIVISION SIGN
          U+221A: "√" SQUARE ROOT -->
     <Key
         latin:keySpec="+"
         latin:additionalMoreKeys="!text/more_keys_for_plus"
-        latin:moreKeys="&#x00B1;,&#x00D7;,&#x00F7;,&#x221A;" />
+        latin:moreKeys="&#x00D7;,&#x00F7;,&#x221A;" />
 </merge>